Quick-release nut.



W. & P. G. POLBERTH.

QUICK RELEASE NUT. APPLICATION FILED 0013 10, 1907.

swa m Patented 00's. 13, 1908.

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' v.. UNITED STATES PATENT OFFICE:

WILLIAM FOLBERTH AND FRED G. FOLBERTH, OF QLEVELA NRDHIO.

QUICK-RELEASE NUT.-

provements in Quick-Release Nuts, of which the following is a specifieationi This invention relates to quick release nuts, and its object is tov provide means whereby the nut may be quickly released, for the pur ose of removal and application, and also W lereby it vmay be locked in position after it has been applied as desired.

A further object is to provideconvenient means for turning the nut whenit is applied or removed. i

It consists broadlyin a nut made up of two parts which tend to se arate by spring action sothat both parts will not normally be in positionto engage closely the screw threads on the part to which the nut is to be applied, together with a cam carried by an arm for the purpose ofiforcing the two parts to ether.

Our invention is particularly applicable to the caps or protectors used on the air inlet plug of automobile wheels, and we have .shown it applied to suchadevice, but it is to be understood that the 30' invention is equally applicable .toother devices.

the accompanying drawings: Figure 1 is a sectional view of a protector or cap mentioned. above with our invention ap-lplied P thereto, the parts being in position to 0 am or firmly engage the threads of the part to which the cap is to be applied; Fig. '2 is a similar view, showing the nut released; Fig. 3 is a plan view of Fig. 1, taken from the bot tom; tig. 4 is a similar view of thedevice as shown in Fig. 2; Fig. 5 is a side view of Fig. 1';

Fig. 6.is a sectional view of amodification of the invention; and Fig. 7'is' abottom view of the device'shown in Fig. 6.

In the drawings we have shown a'tubular sleeve 1 having a closed u per end and having on its interior at the bottom screw threads 2. .This tubular sleeve has on one side two longitudinal cuts 3. through the walls, .extending from the bottom nearly to the top, thus forming a tongue 4 which it will be observed is of thin metal. This tongue 4 is bent so that .it will normally extend out from the surface of the sleeve, as

indicated in Fig. 2. The screw threads on the bottom otthe sleeve and on the bottom ofithe tongue are complementary,- and. as

Specificat-ion of Letters latent.

Application filed October 10, 1907. -Seria1Nb;-396,843.

Patented Octil3, 190

it v i shown in Figs. land 2, are continuous when the parts are 1n operatlve pos1tion.'*The sleeve at its bottom where the screw threads are is made of thickened metal, andis provided. with a thumb piece 16 opposite the tongue 4,;Fand is also provided-with ears 7, 8 projecting upon each side of the 'tongue l.

pin 9 passes through these ears and pivot ally supports the arm 10 which corresponds in shape with the thumb piecefi, and it carries on its inner end aicarn surface 11 adapted to press against the tongue 4, and thereby force it into position whenthe 'armlO is in its lowest position. When tliexarin, 10 is in its upper position, as shown in Fig.2, the

tongue 4 is permitted by itsjsprin'g action-to project from the sleeve, thereby throwingthe' threads on that tongue out of operative position with the part to which the sleeve is aplied. i

t willbe 4 is in its outer position in the form shown in Figs. 1 and 2, the screw threads ofthefpart to which the sleeve is applied "are engaged only throughout a part of their circumference, and therefore the engagementv is loose and the sleeve may be easily and quickly rotated by means of the thumb-piece 6 and arm 10, thus unscrewing the sleeve. It will also be understood that'the cam surface 11 may be of such size and form as to force the tongue 4 against the threads of the part to which the sleeve is applied with greater or less force according to e desires of the operator, and thus the sleeve or nut may be locked more or less firmly to that part.

In Fig. 6 we have shown a 'i' nodification of theinvention in which the sleeve 1 is not provided at its lower endwith screw threads extending through its circumference, but is only provided with a short sectional thread 12, opposite the tongue 4. In this instance, however, as well as in the form shown in Fi 1, the threads on the sleeve and on the thum arecom lementary and coeperate in engaging the t eads of the part to which it is applied, but having the threads extend only. for

a partofthe circumference, as in Figs. 6: and

7, it will be understood'that when the tongue.

4 is released, by the cam 11, the sleeve or nut may be removed vertically without turning upon the screw threaded part to which it has been applied. Aside from this fact the operation of the modification shown in Figs. 6

and? 7 is the same as that shown in Figs. 1 and 2.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. The combination with a cylindrical sleeve having screw threads on its interior at one end and having two longitudinal slots through its walls at that end forming a tongue which is bent to normally stand out from the surface of the sleeve, of a pivoted arm carrying a cam adapted to force the tongue back into alinement with the surface of the sleeve.

2. The combination with a cylindrical sleeve having screw threads on its interior at one end and having two longitudinal slots through its walls at that end forming a tongue which is bent to normally stand out from the surface of the sleeve, of a pivoted arm carrying a cam adapted to force the tongue back into alinement with. the surface of the sleeve, and a thumb piece projecting from said sleeve by which it may be turned.

3. The combination with a cylindrical sleeve having screw threads on its interior at one end and having two longitudinal slots through its Walls at that end forming a tongue which is bent to normally stand out from the surface of the sleeve, of two ears projecting from the sleeve adjacent the tongue, and a short arm pivoted to said ears and carrying on its inner end a cam surface adapted to force the tongue into alinement with the balance of the sleeve.

4. The combination with a cylindrical sleeve having screw threads on its interior at one end and having two longitudiin l slots through its walls at that end forming a tongue which is bent to normally stand out from the surface of the sleeve, of two ears pro'ecting from the sleeve on opposite sides of t e end of the tongue, a short arm in the shape of a thumb piece pivoted to said ears and carrying on its inner end a cam surface adapted to force the tongue into ahnement with the balance of the sleeve when the arm is in a position at right angles to the sleeve, and a second thumb piece on the sleeve opposite the arm.

5. A quick release nut made up of two parts, each carrying a section of comp1ementary screw threads, one part being normally held by spring action without the circumference of the circle upon which the threads of the other part are. drawn, two cars projecting from one part on opposite sides of the other, and a short arm in the shape of a thumb piece pivoted to said ears and carrying a cam surface adapted to force the parts together whereby the nut may be locked or may be released quickly.

In testimony whereof we allix our signatures in presence of two witnesses.

VVHALIMl FOLBERTH. FRED G. FOLBERTH.

Witnesses:

O. E. EKLUND; A. DAIIL. 

